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### How to input using Latex? [duplicate]

I just found this site today and I asked a few questions but I didn't know how to use the latex syntax, so my questions were difficult to understand. Can anyone tell me how to use this Latex program? ...
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### How to use Mathjax? [duplicate]

I can't seem to find instruction anywhere on how to use Mathjax or whatever it is called to correctly format equations etc. I remember seeing a list but can't locate it on the site
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### How to write mathematical expressions in questions using android devices? [duplicate]

I posted a question at Physics Stack Exchange site, and I uploaded a photograph of the calculation I had done on that. But, I was asked to write all my calculations in the question(and not in the ...
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### What is the best/easiest way to write math symbols on this site? [duplicate]

For those with an Android phone, what is your favorite app, or whatever, for displaying math symbols on this site?
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### How can I type math? [duplicate]

I don't know how I can type math in physics.stackexchange when I ask a question or answer. I type math in the Office word and use print screen. May anyone help me?
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How do I write fractions in my answers and questions? How do I write any mathematical expression ? I have tried using x/y type of expressions but it does not work. Please tell me how to do it. Will ...
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### Special text codes for generating symbols [duplicate]

What are special text codes that must be written to generate various mathematical formulae, symbols like limit, derivative, integral, closed integral etc. (in simple keypad) For instance, "**" for ...
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### FAQ for Physics Stack Exchange

Frequently Asked Questions This thread is an index of Frequently Asked Questions, and other resources, for Physics Stack Exchange. General questions about Stack Exchange For general questions about ...
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### What is the Latex and MathJax, how can I write beautiful formulas in my posts?

I get regularly the feedback in comments to use Latex or MathJax. Also I would write beautiful formulas what I can do only on pen & paper. Where can I get info about these?
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### Is it possible to explain how to use LaTeX in questions / answers in the “How to format” help box?

After a bit of time using the site I can see people using lots of nice equations. But there's nothing in the "How to format" help box (or in the "full reference >>" link) saying how to do this. I got ...
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### MathJax: How do I write matrices on the same line?

In answering this question, I needed to multiply three matrices - which obviously involves writing them on the same line. I tried a couple of things, none of which worked, so my question is - how do ...